HP 15.6 Maintenance and Service Guide - Page 49

System board, Display cable ZIF

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System board All system boards use the following part numbers: xxxxxx-001: Non-Windows operating system xxxxxx-601: Windows 10 operating system Table 5-12 System board descriptions and part numbers Description AMD Ryzen 7 3700U processor AMD Ryzen 5 3500U processor AMD Ryzen 3 3200U processor AMD Athlon 300U processor Spare part number L78725-xx1 L78724-xx1 L78723-xx1 L78722-xx1 Before removing the system board, follow these steps: 1. Prepare the computer for disassembly (Preparation for disassembly on page 25). 2. Remove the bottom cover (see Bottom cover on page 26). 3. Remove the battery (see Battery on page 28). 4. Remove the solid-state drive (see Solid-state drive on page 31). 5. Remove the heat sink (see Heat sink (thermal module) on page 39). Remove the system board: 1. Disconnect the following cables from the system board: a. WLAN module antennas (1) b. Speaker cable (2) c. USB board cable (ZIF) (3) d. Power connector cable (4) e. Display cable (ZIF) (5) f. Fan cable (6) g. Keyboard backlight cable (ZIF) (7) h. Keyboard cable (ZIF) (8) i. Touchpad cable (ZIF) (9) j. Fingerprint reader cable (ZIF) (10) k. Card reader/audio board cable (ZIF) (11) Component replacement procedures 41

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System board
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating system
xxxxxx-601: Windows 10 operating system
Table 5-12
System board descriptions and part numbers
Description
Spare part number
AMD Ryzen 7 3700U processor
L78725-xx1
AMD Ryzen 5 3500U processor
L78724-xx1
AMD Ryzen 3 3200U processor
L78723-xx1
AMD Athlon 300U processor
L78722-xx1
Before removing the system board, follow these steps:
1.
Prepare the computer for disassembly (
Preparation for disassembly
on page
25
).
2.
Remove the bottom cover (see
Bottom cover
on page
26
).
3.
Remove the battery (see
Battery
on page
28
).
4.
Remove the solid-state drive (see
Solid-state drive
on page
31
).
5.
Remove the heat sink (see
Heat sink (thermal module)
on page
39
).
Remove the system board:
1.
Disconnect the following cables from the system board:
a.
WLAN module antennas
(1)
b.
Speaker cable
(2)
c.
USB board cable (ZIF)
(3)
d.
Power connector cable
(4)
e.
Display cable (ZIF)
(5)
f.
Fan cable
(6)
g.
Keyboard backlight cable (ZIF)
(7)
h.
Keyboard cable (ZIF)
(8)
i.
Touchpad cable (ZIF)
(9)
j.
Fingerprint reader cable (ZIF)
(10)
k.
Card reader/audio board cable (ZIF)
(11)
Component replacement procedures
41